Phase separation in doped Mott insulators

Abstract

Motivated by the commonplace observation of Mott insulators away from integer filling, we construct a simple thermodynamic argument for phase separation in first-order doping-driven Mott transitions. We show how to compute the critical dopings required to drive the Mott transition using electronic structure calculations for the titanate family of perovskites, finding good agreement with experiment. The theory predicts the transition is percolative and should exhibit Coulomb frustration.

Updated acknowledgements

References in corpus (23)

• Electronic Structure Calculations with Dynamical Mean-Field Theory: A Spectral Density Functional Approach
• Mott transition in VO2 revealed by infrared spectroscopy and nano-imaging
• Dynamical Mean-Field Theory within the Full-Potential Methods: Electronic structure of Ce-115 materials
• Mott transition and suppression of orbital fluctuations in orthorhombic 3$d^1$ perovskites
• Electrostatic carrier doping of GdTiO3/SrTiO3 interfaces
• Momentum space anisotropy and pseudogaps: a comparative cluster dynamical mean field analysis of the doping-driven metal-insulator transition in the two dimensional Hubbard model
• Phase separation and stripe formation in the 2D t-J model: a comparison of numerical results
• Orbital Physics in the Perovskite Ti Oxides
• Visualizing the emergence of the pseudogap state and the evolution to superconductivity in a lightly hole-doped Mott insulator
• Finite doping signatures of the Mott transition in the two-dimensional Hubbard model
• Origin of high-Tc superconductivity in doped Hubbard models and their extensions: Roles of uniform charge fluctuations
• Mott physics and first-order transition between two metals in the normal state phase diagram of the two-dimensional Hubbard model
• Phase Separation close to the density-driven Mott transition in the Hubbard-Holstein model
• First order Mott transition at zero temperature in two dimensions: Variational plaquette study
• Doping-driven Mott transition in the one-band Hubbard model
• Dielectric properties and dynamical conductivity of LaTiO3: From dc to optical frequencies
• Checkerboards, stripes and corner energies in spin models with competing interactions
• Filling-Control Metal-Insulator Transition in the Hubbard Model Studied by the Operator Projection Method
• The Anderson-Mott transition induced by hole-doping in Nd1-xTiO3
• Limits on Phase Separation for Two-Dimensional Strongly Correlated Electrons
• Doping-driven Mott transition in La_{1-x}Sr_xTiO_3 via simultaneous electron and hole doping of t2g subbands
• Quantum Criticality and Incipient Phase Separation in the Thermodynamic Properties of the Hubbard Model
• Universality classes for Coulomb frustrated phase separation

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